Short-Term Effect of SARS-CoV-2 Spike Protein Receptor-Binding Domain-Specific Antibody Induction on Neutrophil-Mediated Immune Response in Mice

Vaccination protects against COVID-19 via the spike protein receptor-binding domain (RBD)-specific antibody formation, but it also affects the innate immunity. The effects of specific antibody induction on neutrophils that can cause severe respiratory inflammation are important, though not completel...

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Veröffentlicht in:International journal of molecular sciences 2022-07, Vol.23 (15), p.8234
Hauptverfasser: Bolkhovitina, Elena L., Vavilova, Julia D., Bogorodskiy, Andrey O., Zagryadskaya, Yuliya A., Okhrimenko, Ivan S., Sapozhnikov, Alexander M., Borshchevskiy, Valentin I., Shevchenko, Marina A.
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container_issue 15
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container_title International journal of molecular sciences
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creator Bolkhovitina, Elena L.
Vavilova, Julia D.
Bogorodskiy, Andrey O.
Zagryadskaya, Yuliya A.
Okhrimenko, Ivan S.
Sapozhnikov, Alexander M.
Borshchevskiy, Valentin I.
Shevchenko, Marina A.
description Vaccination protects against COVID-19 via the spike protein receptor-binding domain (RBD)-specific antibody formation, but it also affects the innate immunity. The effects of specific antibody induction on neutrophils that can cause severe respiratory inflammation are important, though not completely investigated. In the present study, using a mouse model mimicking SARS-CoV-2 virus particle inhalation, we investigated neutrophil phenotype and activity alterations in the presence of RBD-specific antibodies. Mice were immunized with RBD and a week after a strong antibody response establishment received 100 nm particles in the RBD solution. Control mice received injections of a phosphate buffer instead of RBD. We show that the application of 100 nm particles in the RBD solution elevates neutrophil recruitment to the blood and the airways of RBD-immunized mice rather than in control mice. Analysis of bone marrow cells of mice with induced RBD-specific antibodies revealed the increased population of CXCR2+CD101+ neutrophils. These neutrophils did not demonstrate an enhanced ability of neutrophil extracellular traps (NETs) formation compared to the neutrophils from control mice. Thus, the induction of RBD-specific antibodies stimulates the activation of mature neutrophils that react to RBD-coated particles without triggering excessive inflammation.
doi_str_mv 10.3390/ijms23158234
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subjects Antibodies
Antibody response
Antigens
Binding
Bone marrow
Cell activation
Coated particles
Coronaviruses
COVID-19
COVID-19 vaccines
CXCR2 protein
Immune response
Immune system
Immunization
Inflammation
Inhalation
Injections
Innate immunity
Leukocytes (neutrophilic)
Lungs
Neutrophils
Pathogens
Phenotypes
Proteins
Recruitment
Respiration
Rodents
Severe acute respiratory syndrome coronavirus 2
Spike protein
Vaccination
title Short-Term Effect of SARS-CoV-2 Spike Protein Receptor-Binding Domain-Specific Antibody Induction on Neutrophil-Mediated Immune Response in Mice
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